Question

这个问题困扰了我一个多月。它是这样的：我们有两个字符串列表

Dim List1 As New List(Of String) From {"a", "b", "c", "d"} ' and so on
Dim List2 As New List(Of String) From {"e", "f", "g", "h", "i", "j"} ' and so on

此时我们有24种可能的组合（List1与List2）

Dim allCombo As Integer = List1.Count * List2.Count

循环和存储所有可能的组合不是一种选择。现在我可以应用什么样的数学计算，这样如果我想要组合数13，则用'e'返回'c';或者24与'j'是'd'，依此类推。我坚持这个，有人可以帮我吗？提前谢谢！

Answer 1

  Function GetIndex(index As Integer) As String
    Dim List1 As New List(Of String) From {"a", "b", "c", "d"}
    Dim List2 As New List(Of String) From {"e", "f", "g", "h", "i", "j"}

    Dim intIndex0 As Integer = index - 1 'convert to 0-based
    Dim index1 As Integer = intIndex0 \ List2.Count 'integer division
    Dim index2 As Integer = intIndex0 Mod List2.Count 'modulo (remainder)
    Return List1(index1) & List2(index2)
  End Function

Answer 2

var myFeedback = feedback();

myFeedback().successMessages(function(success) {
    console.log(success);
}).errorMessages(function(error) {
    console.log(error);
}).infoMessages(function(info) {
    console.log(info);
}).allMessages(function(response) {
    console.log(response);
});

从两个字符串列表中获取特定组合

2 个答案: